300 Lxxiii. compositj: (Oliver and hiern). [Adenostemma. 



angular, striate, glabrous or glandular-pubernlous. Leaves ovate, 

 acnte or obtuse, cuneate at the base into petiole, serrate- or crenate- 

 dentate, membranous, scaberulous or glabrate, ranging up to 6 in. long 

 bj 3^ in. wide, upper smaller and fewer; petioles ranging up to 2^ in. 

 long or more, upper and in some forms all shorter. Capitula ^-f in. 

 ■wide, on unequal usually slender pedicels, sometimes l-J in. long, in 

 loose or rarely rather dense diehotomous usually viscous-pubescent 

 axillary and terminal panicles. Scales of involucre oblong, sub-biseriate, 

 equal, blunt, nearly glabrous. Corolla white. Achenes more or less 

 muricate or tuberculate or rarely quite smooth. — A. Ferrottetii, DC. 

 1. c. 110. A. mauritianum, DC. 1. c. 110. A. Dregei, DC. 1. c. 111. 

 A. caffrum,'DC. I.e. 112. A. natalense, DC. 1. c. 112. A. Schimperi, 

 Sch. Bip. in PI. Schimp. Abyss. § i. n. 112 (Inflorescence rather 

 dense). 



The rest of the synonymy is omitted. 



Upper Guinea. Fernando Po, 4-8000 ft. alt. ; Mann ! Cameroon Mountains, 

 2600-7500 ft. alt., Mann! Niger, Barter! Sierra Leone, Afzelius ! 



Ifflle Ziand. Abyssinia, Schimper! Niamniam-land, Schweinfurth ! 

 Xiower Guinea. Congo, Chr. Smith! Loango, Soyaux ! 



10, AGEBATUM, L. ; Benth. et Hook. f. Gen. PI. ii. 241. 



Capitula homogamous. Involucre campanulate ; scales 2-3-8eriafce, 

 linear, acute, subequal ; receptacle convex (or plane), naked (or palea- 

 ceous). Corolla tubular, slightly dilated above and narrowed at the 

 5-toothed mouth. Anther-base obtuse, tip ovate. Achenes 6-4-an- 

 gular ; pappus of 5-4 scabei'ulous seto3, dilated and lanceolate at base 

 (or setas connate below or 10-20 narrower). — Herbs. Leaves opposite 

 or upper alternate. Capitula small or medium in paniculate corymbs. 

 Flowers blue purplish or white. 



Confined to America with the exception of the following species, a common weed 

 throughout the warmer regions of the globe. 



1. £Lm conyzoldes, L. ; DC. Prodr. v. p. 108. Erect branching an- 

 nual, varying to 3 ft. ; branches subterete, finely striate, hirsute above. 

 Leaves ovate, obtuse or subacute, base abruptly or obtusely narrowed, 

 crenate or crenate-serrate, 1-3 in. long, ^-2 in. broad ; petiole varying 

 to 1 or 2 in., often much shorter. Capitula ^ in. diam., in dense 

 terminal panicled corymbs. Involucre nearly glabrous. Achenes black, 

 glabrous or obsoletely setulose. 



Widely spread in Tropical Africa. 



11. EUPATOBITJM, L. ; Benth. et Hook. f. Gen. PI. ii. 245. 



Capitula homogamous, few or many-flowered. Involucre oblong or 

 various, scales pauci- or multi- seriate, imbricate, outer gradually shorter 

 or all subequal. Receptacle naked. Corolla regular, in the following 

 species slightly dilated to the shortly 6-fid mouth. Anther-base obtuse 

 or subtruncate, -tip short, ovate. Style- branches elongate, slightly 



